M4.6 Earthquake 20 km NW of Basse-Pointe, Martinique — April 21, 2022
2022-04-21 19:30:09 UTC (2022-04-21) · approx. 3:30 PM UTC-4 local
On April 21, 2022 at 19:30 UTC, a magnitude 4.6 intermediate depth earthquake struck 20 km NW of Basse-Pointe, Martinique, at a depth of 148.1 km and coordinates 15.0186°, -61.2228°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-61.2228°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Basse-Pointe, Martinique?
The magnitude 4.6 earthquake that struck 20 km NW of Basse-Pointe, Martinique on April 21, 2022 at 19:30 UTC had a depth of 148.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 15.0186°, -61.2228°, which is 20 km NW of Basse-Pointe, Martinique.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000hfe3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, April 21, 2022). M4.6 Earthquake 20 km NW of Basse-Pointe, Martinique — April 21, 2022. Retrieved June 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000hfe3/